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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 543 · 40 sums
TalentJR

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

NameDateTime takenScore ___ / 40
  1. 1.What is the complement of 44° (in degrees)?
  2. 2.What is the complement of 21° (in degrees)?
  3. 3.Two angles are complementary. One is 10° more than the other. What is the bigger angle (in degrees)?
  4. 4.Two parallel lines are cut by a transversal. One interior angle is 113°. What is its other interior angle on the same side of the transversal (in degrees)?
  5. 5.Two straight lines cross each other. One of the angles formed is 160°. What is the angle vertically opposite to it (in degrees)?
  6. 6.Two angles are complementary. One is 50° more than the other. What is the bigger angle (in degrees)?
  7. 7.Are 60° and 30° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  8. 8.Are 22° and 26° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  9. 9.Two parallel lines are cut by a transversal. One interior angle is 121°. What is its other interior angle on the same side of the transversal (in degrees)?
  10. 10.What is the complement of 17° (in degrees)?
  11. 11.What is the supplement of 128° (in degrees)?
  12. 12.Are 69° and 21° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  13. 13.What is the complement of 81° (in degrees)?
  14. 14.What is the supplement of 129° (in degrees)?
  15. 15.Two angles are supplementary. One is 76° more than the other. What is the bigger angle (in degrees)?
  16. 16.Two angles are supplementary. One is 98° more than the other. What is the bigger angle (in degrees)?
  17. 17.Are 29° and 61° complementary, supplementary or neither? (a) Supplementary (b) Complementary (c) Neither
  18. 18.Two angles are supplementary. One is 64° more than the other. What is the bigger angle (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 152°. What is the angle vertically opposite to it (in degrees)?
  20. 20.Two parallel lines are cut by a transversal. One angle is 144°. What is its corresponding angle (in degrees)?
  21. 21.Two angles are supplementary. One is 128° more than the other. What is the bigger angle (in degrees)?
  22. 22.What is the supplement of 73° (in degrees)?
  23. 23.What is the complement of 36° (in degrees)?
  24. 24.Two straight lines cross each other. One of the angles formed is 125°. What is the angle vertically opposite to it (in degrees)?
  25. 25.Are 10° and 170° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  26. 26.What is the supplement of 97° (in degrees)?
  27. 27.Two angles are supplementary. One is 92° more than the other. What is the bigger angle (in degrees)?
  28. 28.What is the supplement of 122° (in degrees)?
  29. 29.Two straight lines cross each other. One of the angles formed is 77°. What is the angle vertically opposite to it (in degrees)?
  30. 30.Two angles are complementary. One is 60° more than the other. What is the bigger angle (in degrees)?
  31. 31.What is the complement of 15° (in degrees)?
  32. 32.What is the complement of 30° (in degrees)?
  33. 33.Two straight lines cross each other. One of the angles formed is 88°. What is the angle next to it on the same line (in degrees)?
  34. 34.What is the complement of 43° (in degrees)?
  35. 35.Are 60° and 120° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  36. 36.What is the supplement of 63° (in degrees)?
  37. 37.Two angles are complementary. One is 58° more than the other. What is the bigger angle (in degrees)?
  38. 38.What is the supplement of 32° (in degrees)?
  39. 39.Are 31° and 59° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  40. 40.What is the complement of 41° (in degrees)?

Answer key

  1. 46
  2. 69
  3. 50
  4. 67
  5. 160
  6. 70
  7. Complementary
  8. Neither
  9. 59
  10. 73
  11. 52
  12. Complementary
  13. 9
  14. 51
  15. 128
  16. 139
  17. Complementary
  18. 122
  19. 152
  20. 144
  21. 154
  22. 107
  23. 54
  24. 125
  25. Supplementary
  26. 83
  27. 136
  28. 58
  29. 77
  30. 75
  31. 75
  32. 60
  33. 92
  34. 47
  35. Supplementary
  36. 117
  37. 74
  38. 148
  39. Complementary
  40. 49

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